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Title
Organosolv pulping of cotton linters
Authors
Nahed A. Abd El-Ghany
Received
October 9, 2009
Published
Volume 43 Issue 9-10 October-December
Keywords
anthraquinone (AQ), cotton linters, chemical reactivity (xanthation), ethanol, fine structure,
Abstract
Compared to prehydrolysis soda pulping, prehydrolysis soda ethanol pulping of cotton linters stabilizes the long-chain cellulose macromolecules against alkaline degradation. The presence of ethanol also results in a more open and accessible fine structure, higher chemical reactivity (in xanthation), and better viscose filterability. Prehydrolysis soda ethanol anthraquinone pulping results in a still higher stabilization of cellulose in cotton, a more open and accessible fine structure, higher chemical reactivity and a better viscose filterability. In this respect, the hydrochloric acid (HCl) is superior to the sulphuric acid (H SO ). The 2 4 prehydrolysis soda ethanol anthraquinone pulping method gives cotton linters with better chemical reactivity than that of commercial softwood pulp.
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